Dreams are a phenomenon of the fourth body, and the fourth body has great potential. Whatever siddhis, psychic powers, are mentioned in yoga texts are attained in this body. Yoga has constantly warned the meditator not to be concerned with them. There is the greatest danger of going astray there. Even if you go into a psychic state it has no spiritual value.
So when I said that the kundalini is psychic, what I meant was that it is actually a phenomenon of the fourth body. This is why physiologists cannot discover the kundalini within the human body. So it is only natural that they deny the existence of kundalini and the chakras and call them imaginary. They are aspects of the fourth body. The fourth body exists, but it is very subtle; it cannot come within our grasp. Only the physical body can be grasped. Yet there are corresponding points between the first body and the fourth body.
If we were to place seven sheets of paper one on top of the other, prick a hole through them with a pin so that all the papers are pierced, then even if the hole disappears from the first sheet it will still carry a mark that corresponds to the holes in the rest of the sheets. Then although the first paper does not have the hole, it has the point which will correspond directly with the pinholes on the other sheets when it is placed upon them. So the kundalini, the chakras, and so on, do not belong to the first body as such, but there are corresponding points in the first body. So a physiologist is not wrong if he denies them. The chakras and the kundalini are in other bodies, but points corresponding to them can be found on the physical body.
So kundalini is the energy of the fourth body and it is psychic. And when I say that this psychic happening is of two kinds – one true and one false – then you will understand what I mean. It will be false when it is a product of your imagination, because imagination is also a characteristic of the fourth body. Animals do not have the power of imagination, so they have very little memory of the past and no idea of future. Animals are free from anxiety because anxiety is always for the future. Animals see many deaths taking place, but they never imagine that they can die too; therefore, they have no fear of death. Among men also there are many who are not bothered by the fear of death. Such a man always associates death with others and not with himself. The reason is that the power of imagination in the fourth body has not developed fully enough to see into the future.
This means that imagination can also be true or false. True imagination means that we are capable of seeing further ahead, that we can visualize that which has not yet come to pass. But to imagine that something will happen that cannot be, which does not exist, is false imagination. When imagination is used in its right perspective it becomes science; science is only imagination in the beginning.
For thousands of years man has dreamed of flying. The men who had dreamed in this way must have been very imaginative. If man had never dreamed about flying, it would have been impossible for the Wright brothers to make the first airplane. They made man’s desire to fly materialize. This desire took some time to shape; then experiments were carried out, and finally man succeeded in flying.